print("{:,}".format(1234567890))

print("{:.2f}".format(12345.67890))
print("{:.5}".format("Python是最接近人工智能的编程语言"))

#类型
print("{0:b},{0:d},{0:o},{0:x},{0:X},{0:c}".format(425))
print("{0:c}".format(97))